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. 2015 Nov 5;2015:589–593.

Table 1.

Patient demographics of the dental cohort.

Number of dental patients 865,256


Number with periodontal disease 433,674 (50.1%)


Number with rheumatoid arthritis 21,442 (2.5%)


Age (years)
  Median 44
  25th percentile 36
  75th percentile 56


Male 806,944 (93.3%)


Race/Ethnicity
  Caucasian 509,394 (58.9%)
  African American 194,546 (22.5%)
  Hispanic 49,926 (5.8%)
  Asian 5,955 (0.7%)
  Other/Unknown 105,435 (12.2%)